Rim lock



Patented Jan. 4, 1927.

inll dt l hl innate KARL A. BRAUNING, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE 8a TOWNE MANUFACTURING COMPAIJY, OF STAMFORD, CONNECTICUT.

RIM LOOK.

Application filed January This invention relates to improvements in rim lock of the rotary bolt type one object being to provide simple and eificient means for sliding and rotating the bolt when actuated through the medium of a knob or thumbturn or a key, and more particularly to improve the key operated devices for actuating the bolt sliding and turning means.

lVith. this and other objects in view, the invention consists in certain novel features of construction and combinations of parts as hereinafter set forth and pointed out in the claims.

In the accompanying drawings;

Figure 1 is a rear face view showing a rim lock en'ibodying my improvements, the bolt being shown as having been projected but not turned;

Figure 2 is a transverse sectional view;

Figure 3 is a plan view showing the inner side of the cover plate and parts applied to said plate;

Figure l is a rear face view partly in section, with the cover plate omitted and showing positions of the parts when the bolt has been projected and rotated, and

Figure 5 is a detail perspective view of the swinging lever.

The casing of a rim lock is indicated at 1 and a removable cover plate is shown at 2,- one end of said cover plate entering a groove 3 in one end wall of the casing while the other end engages a lug or lugs 4 at the opp site end of the casing,-the side portions of said plate resting upon lugs 5 at the sides of the casing. A latch 6 is pivoted to the cover plate and engages in a groove (or grooves) in the lug or lugs i to hold said cover plate in place. v

The bolt of the lock is represented at 7 and is provided at its forward end with lateral projections forming a cross-head 8 which, when the bolt is in retracted position, occupies a suitably shaped opening in one end wall of the casing and when the bolt is projected into the strike or keeper (not shown) and turned, said cross head will become so disposed that it will cooperate with the strike or keeper in such manner that it cannot be retracted without first being turned.

A portion of the cover plate 2 is so formed or struck up as to provide a curved seat portion 8 to receive and assist in guiding the bolt, the latter being also received and 9, 1925. Serial No. 1,437.

guided by a curved seat portion 9 which may be struck up from the metal of a slide 10 mounted on elongated shoulders 11 within the casing 1. I

The curved seat portion of the cover plate is provided with a right-angular slot 12, one wall ofsaid slot at the juncture of its two portions being beveled as at 13, to facilitate the passage of a pin 14 on the bolt 7, from one portion to the other of said slot. The curved seat portion 9 of the slide 10 is provided with a diagonal slot 15 which receives a pin 16 on the bolt and the latter is also provided with a stop pin 17 to engage an end wall of the casing and thus limit the extent to which the bolt may be projected, and also offer resistance against withdrawal. of the bolt by jimmying.

A knob 18 is suitably mounted in a wall of the casing and provided within the latter with an arm or cam 19, from which a pin 20 projects and passes through and beyond a straight transverse slot 21 near one end of the slide 10. The knob arm or cam 19- is provided with flattened faces 22, with one or the other of which, a spring 23 engages to hold said arm or cam at one end or the other of its throw.

When the knob 18 is turned in one direction (the bolt being in retracted the slide 10 will be caused position), to move forwardly and the bolt will also be moved forwardly while the pin let is moving in the longitudinal portion of the angular slot 12 in the cover plate, until the position shown in Figure 1 is reached. As the slide continues to move forwardly cooperation of the diagonal slot 15 in the slide and the pin 16 on the bolt will cause the latter to turn, the pin 14 moving in the transverse portion of the angular slot 12. It is apparent that reverse rotation of the knob will cause backward movement of the slide and the consequent turning and retracting of the bolt.

The cover plate 2 carries a roll-back 24:

operable by a suitable key actuated or otherwise controlled lock means; and this roll back is provided with an arm or cam 25 carrying a pin 26. Interposed between the knob roll-back arm or cam 19 and the keyoperated roll-back arm or cam 25 is a swinging lever 27. This lever is provided at one end with an L-shaped arm 28 having a perforation 29 for the accommodation of a pin 30 whereby it is pivotally connected with the cover plate 2. Near its other end portion, the lever 27 is provided with a slot 31, into which the pin 20 on the knob roll-back arm 19 enters and at respective sides of this slot, the lever 27 is provided with flanges 32, to receive between them, the pin 2?) on the arm or cam 25 of the key-actuated roll-back 24, said pin being guided to the space between the flanges 32 by flaring portions 33 of said flanges.

It will be understood that when the rollback 24: is turned in one direction through the medium of lock mechanism actuated by and rotary movement to said bolt, and a rollback cooperable with said means, of a swinging lever cooperable with said rollback, a second roll-back cooperable with said lever to swing the same, and separate operating means for the respective roll-backs.

2. In a lock, the combination with a casing, a bolt, and means for imparting longitudinal and rotary movement to said bolt, of a knob operated roll-back cooperable with said means to operate the same, a swinging lever also cooperable with said means to operate the same, and a key controlled rollback cooperable with said lever for swinging the same.

3. In a lock, the combination with a casing, a bolt, and means for imparting longitudinal and rotary movement to the bolt, of a swinging lever cooperable with said means, said lever having oppositely disposed guides, a key controlled roll-back having a cam provided with a pin cooperable with said guides to swing the lever..

i. In a lock, the combination with a casing, a bolt, and means including a slide having an elongated slot, for imparting longitudinal and rotary movement to said bolt, of a knob controlled rollback cam having a pin passing through the elongated slot in said slide, swinging lever having a slot receiving said pin, said lever also having guides, and a key controlled roll-back having a pin movable between said guides to swing the lever.

55. In a lock, the combination with a casing, and a belt, of a plate having a curved seat for the bolt, the seat portion of said plate having an angular slot, a pin carried by the bolt and movable in said slot, a slide having a curved seat for the bolt, the seat portion of the slide having a diagonal slot, a pin carried by the bolt and entering said diagonal slot, said slide also having a transverse slot, and a knob-operated roll-back am having a pin. passing through said transverse slot.

6. In a lock, the combination with a casing, and a bolt, of a plate having a curved seat for the bolt, the seat portion of said plate having an angular slot, a pin carried by the bolt and movable in said slot, a slide having a curved seat for the bolt, the seat portion of the slide having a diagonal slot, a pin carried by the bolt and entering said diagonal slot, said slide also having a transverse slot, a knob-operated roll-back cam having a pin passing through said transverse slot, a swinging lever having a slot to re ceive said last-mentioned pin. said lever pro vided with guides having flaring portions. and a key controlled cam having a pin mov able between said guides to swing said lever.

In testimony whereof, I have signed this specification.

KARL A. BRAUNING. 

